 
    :host           - String id of canvas element or DOM element itself.
                      Specifies host for the sketch. Must be specified in sketch,
-                     may be omitted in defsketch. If ommitted in defsketch,
+                     may be omitted in defsketch. If omitted in defsketch,
                      :host is set to the name of the sketch. If element with
                      specified id is not found on the page and page is empty -
                      new canvas element will be created. Used in ClojureScript.

     clip
     "Limits the rendering to the boundaries of a rectangle defined by
  the parameters. The boundaries are drawn based on the state of
  the (image-mode) fuction, either :corner, :corners, or :center.
  To disable use (no-clip)."
     [x y w h]
     (.clip (current-graphics) (float x) (float y) (float w) (float h))))

  "Adjusts the character and level of detail produced by the Perlin
  noise function. Similar to harmonics in physics, noise is computed
  over several octaves. Lower octaves contribute more to the output
  signal and as such define the overall intensity of the noise, whereas
  higher octaves create finer grained details in the noise
  sequence. By default, noise is computed over 4 octaves with each
  octave contributing exactly half than its predecessor, starting at
